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File #: 2019-222    Version: 1 Name:
Type: Resolution Status: Passed
File created: 6/3/2019 In control: Board of Directors
On agenda: 6/26/2019 Final action: 6/26/2019
Title: Contract No. 1803685 Aluminum Sulfate, Liquid Alum
Sponsors: Cheryl Porter, Terry Daniel
Indexes: Water Operations
Attachments: 1. 1803685 Procurement Report, 2. 1803685 Bid Summary, 3. 1803685 Vendor Response Survey, 4. Alum Market Trend - 2018.pdf

Contract No. 1803685
Aluminum Sulfate, Liquid Alum

Agenda of: June 26, 2019
Item No.: 2019-222
Amount: Three (3) Year Contract $ 9,953,250.00
First Year Renewal Option 3,317,750.00
Second Year Renewal Option 3,317,750.00
Total $16,588,750.00

TO: The Honorable
Board of Directors
Great Lakes Water Authority

FROM: Sue F. McCormick
Chief Executive Officer
Great Lakes Water Authority

DATE: June 4, 2019

RE: Contract No. 1803685
Aluminum Sulfate, Liquid Alum
Vendor: Chemtrade Chemicals US, LLC

Upon recommendation of Cheryl Porter, Chief Operating Officer - Water and Field Services, the Board of Directors (Board) of the Great Lakes Water Authority (GLWA), authorizes the Chief Executive Officer (CEO) to enter into Contract No. 1803685 "Aluminum Sulfate, Liquid Alum" with Chemtrade Chemicals US, LLC, in the amount of $9,953,250.00 for three (3) years, with two (2) one (1) year renewal options at a cost of $3,317,750.00 for each renewal year for a total contract amount of $16,588,750.00; and also authorizes the CEO to take such other action as may be necessary to accomplish the intent of this vote.

Aluminum Sulfate (Alum), when added to raw water, reacts with the alkalinity present in water causing suspended particles to form larger particles for removal. These large particles of suspended matter in raw water can be removed by allowing them to settle to the bottom of a sedimentation basin. However, there are smaller particles in surface water that do not settle out within a reasonable time without help to accelerate the process. These smaller particles, normally referred to as non-settleable solids, usually consist of a combination of biological organisms, bacteria, viruses, protozoan, color, organic matter and inorganic solids. The term turbidity is applied to all suspended solids in water.
To effectively remove the suspended solids (turbidity), the size of the smaller particles needs to be increa...

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